Submission #1613713

---

Source Code Expand

#include<bits/stdc++.h>
using namespace std;
#define vi vector<int>
#define vvi vector<vi>
#define vs vector<string>
#define pb push_back
#define P pair<int,int>
#define vp vector<P>
#define PP pair<P,int>
#define vpp vector<PP>
#define fi first
#define se second
#define INF 1e9
#define MOD 1000000007
#define REP(i,n) for(int i=0;i<n;i++)
#define REPR(i,n) for(int i=n;i>=0;i--)
#define FOR(i,m,n) for(int i=m;i<n;i++)
#define all(x) (x).begin(),(x).end()
int main(){
    int a,b;
    cin>>a>>b;
    int x[2]={};
    REP(i,a){
        int t;
        cin>>t;
        x[t%2]++;
    }
    int ans=1;
    if(x[0]==a){
        if(b==0){
            REP(i,a)ans*=2;
        }else{
            ans=0;
        }
    }else{
        REP(i,a)ans*=2;
        ans--;
    }
    cout<<ans<<endl;
    return 0;
}

Submission Info

Judge Result